datapath: openvswitch: Add missing case OVS_TUNNEL_KEY_ATTR_PAD

datapath: openvswitch: Add missing case OVS_TUNNEL_KEY_ATTR_PAD

    openvswitch: Add missing case OVS_TUNNEL_KEY_ATTR_PAD

    Added a case for OVS_TUNNEL_KEY_ATTR_PAD to the switch statement
    in ip_tun_from_nlattr in order to prevent the default case
    returning an error.

    Fixes: b46f6ded906e ("libnl: nla_put_be64(): align on a 64-bit area")
    Signed-off-by: Kris Murphy <kriskend@linux.vnet.ibm.com>
    Acked-by: Joe Stringer <joe@ovn.org>
    Signed-off-by: David S. Miller <davem@davemloft.net>
Upstream: 8f3dbfd79ed9("openvswitch: Add missing case OVS_TUNNEL_KEY_ATTR_PAD")

Fixes: f34648187b03 ("datapath: backport: libnl: nla_put_be64(): align
on a 64-bit area")

Signed-off-by: Andy Zhou <azhou@ovn.org>
Acked-by: Joe Stringer <joe@ovn.org>